p18johnsonj p18johnsonj

15-03-2018
Mathematics

contestada

What is the standard form of (1 + 7i)(3 − i)?

Respuesta :

evgeniylevi evgeniylevi

15-03-2018

Consider this option:
1. if the standard form is z=x+iy, then
2. (1+7i)(3-i)=1*3-1*i+21i-7i*i=3-i+21i+7=10+20i

answer: 10+20i

Answer Link

Otras preguntas

each of the following entities has the power of eminent domain, except: select one: a. religious schools. b. railroads. c. public utilities. d. school districts

Caleb is going to see a movie and is taking his 3 kids. Each movie ticket costs $13 and there are an assortment of snacks available to purchase for $3.50 each.

Which degenerate conic is formed when a double cone is sliced at the apex by a plane parallel to the base of the cone? two lines point hyperbola ellipse

need help!! algebra 1

Given the domain (-5,-1,3,5) find the first number in the range of the function f(x)=-2x -3 .

u/3 = -51 solve for u simplify your answer as much as possible

Write the correct equation for the following statement. The product of x and nine is three

10) Suppose the regression line for a set of data, y = 3x +b, passes through the point (2,5). If x and y are the sample means of the x- and y-values, respective

Compute the value of [tex]\prod^{100}_{k=0} (1-k^2 +k^4) \pmod{101}[/tex].

Victor made a scale drawing of bedroom using a scale in which 3 inches represents 2 feet. The height of his bedroom is 10 feet.' help please due in 5 mins!!!